2157914 has 24 divisors (see below), whose sum is σ = 3669204. Its totient is φ = 950400.

The previous prime is 2157913. The next prime is 2157923. The reversal of 2157914 is 4197512.

2157914 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1890625 + 267289 = 1375^2 + 517^2 .

It is not an unprimeable number, because it can be changed into a prime (2157913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8834 + ... + 9074.

2^2157914 is an apocalyptic number.

2157914 is a deficient number, since it is larger than the sum of its proper divisors (1511290).

2157914 is a wasteful number, since it uses less digits than its factorization.

2157914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302 (or 291 counting only the distinct ones).

The product of its digits is 2520, while the sum is 29.

The square root of 2157914 is about 1468.9840026358. The cubic root of 2157914 is about 129.2244554920.

The spelling of 2157914 in words is "two million, one hundred fifty-seven thousand, nine hundred fourteen".